Simulation Analysis and Improvement of Car Ride Based on Virtual Prototype
|Course||Mechanical and Electronic Engineering|
|Keywords||Ride comfort Virtual Prototyping Multibody system dynamics Air suspension Car|
NVH (Noise, Vibration, Harshness) is a comprehensive index to reflect the dynamic characteristics of the car . Vehicle ride comfort the automotive NVH performance evaluation , which focuses on the uncomfortable feeling of the occupant to solve the vibration in the NHV . For a car needs to further improve its ride requirements by using the ADAMS / Car virtual prototyping and simulation for the ride analysis road model ; simulation is carried out in accordance with the relevant standards , and the results were analyzed and evaluated on this basis a viable solution to improve ride comfort . First of all , on the basis of summing up the national standards of the international standard ISO2631 and our ride evaluation to determine the comprehensive evaluation index for the ride analysis of this article , including comfort parameters , the suspension dynamic travel and tire dynamic load . Secondly , the use of ADAMS / Car to establish a car for simulation analysis and virtual prototyping . To enable the establishment of a virtual prototype of the dynamic characteristics of the maximum extent close to the physical prototype , the key parameters been re-set , in particular resilient element characteristic curve and the characteristic curve of the shock absorber damping front and rear suspension , and the wheel alignment parameters, etc. . Static balance simulation verify the correctness of the model . Furthermore , different speed , the the ride simulation tests under different road underbody seat at three axial vibration acceleration and suspension dynamic travel and tire load , and calculated the value of weighted acceleration rms get the final evaluation the ride of three parameters value . The results obtained were compared with the relevant standards , to arrive at the conclusion of the ride merits . Finally , from the suspension parameters match starting , raised ride improved a variety of programs , and to analyze the feasibility of the various programs . In summary , this study identified a ride analysis of vehicles based on virtual prototyping technology evaluation methods , evaluation through simulation of the car ride , and then explored ride improvement program . The evaluation findings show that : the car in low speed ride better high speed could be improved , which is consistent with the actual situation ; research results show that the improved scheme can significantly improve vehicle ride comfort with air suspension .